如何删除两个句子之间的空格？

Question

示例输入文件包含三个句子，如下所示：

I am learning python.


I have too remove spaces between sentences in file.


How to do that,thankyou.

输出应为：

I am learning python.
I have to remove spaces between sentences in file.
How to do that,thankyou.

Answer 1

public final class User {
    public init(firstName: String, lastName: String) {
        self.firstName = firstName
        self.lastName = lastName
    }
    public var firstName: String
    public var lastName: String
    public internal(set) var id: Int
}


protocol ActiveRecord {
    static func create(object: Self) throws -> Self
    static func fetch(id: Int) throws -> Self
    static func update(object: Self) throws -> Self
    static func delete(id: Int) throws 
}

extension User: ActiveRecord {
    static func create(object: User) throws -> User {
        ...
    }
    static func fetch(id: Int) throws -> User {
        ...
    }
    static func update(object: User) throws -> User {
        ...
    }
    static func delete(id: Int) throws {
        ...
    } 
}